HIGH TECH IN EARTH SPACE RESEARCH

Development and modeling of decoding method оf error correction block code using the second Chase algorithm

Kuznetsov V.S., Volkov A.S., Bykov A.V.

The paper describes the principle of operation of the joint modulation and coding structure with the use of ternary error-correction codes on each of the quadrature axes. A system with cascade decoding is chosen, which uses an external ternary code and an internal binary decoder. Reed-Solomon code is selected as the internal one, so both outputs of the ternary decoders are combined in a single input vector.

The ternary decoding is constructed in a cascade method, the code parameters are chosen so that 2 8-bit symbols are obtained at the output.

The calculation of the parameters for the signal-code construction is given. The ternary code was divided into an equilibrium and corrective code, for which the calculated bit error probability is given, taking into account the equating of these energy codes and frequency efficiency. The upper additive bound for the selected ternary code was obtained.

A comparison of the selected ternary code with another noise-proof code is given. For comparison, the Bose-Chaudhuri-Hocquenghem code was taken, since this code has the same block length and noise immunity in the Hamming metric. As a result of comparison, the coding rate of the ternary code is 30% higher.

A decoding scheme was developed for the equilibrium code using the second Chase algorithm. Based on this scheme, a simulation model of the decoder has been developed, in order to determine the probability of a block error. The probabilities obtained as a result of the simulation is consistent with upper additive boundary, which proof the reliability of the use of computational methods for quasi-correlation decoding methods.

The finalization of the calculated data taking into account the results of modeling and the correction for the power of the code is carried out. The bit error rate for the entire system is obtained, which indicates the possibility of reliable information transmission.

The subject of published articles on the nomenclature of specialties

2.2.15 Systems, networks and telecommunications (technical sciences)

2.3.1 System analysis, management and processing of information (technical sciences)

2.3.5 Mathematical and software of computing systems, complexes and computer networks (technical sciences)

2.3.6 Methods and information protection systems, information security (technical sciences)

2.5.13 Design, design and production of aircraft (technical sciences)

2.5.16 Dynamics, ballistics, the movement of aircraft (technical sciences)

Editorial board

Bobrowsky V.I.
(Ph.D., Associate Professor, Head of Department of "INTELTEH")

Borisov V.V.
(Ph.D., Professor, Actual Member of the Academy of Military Sciences, Professor, Department of Computer Science of MPEI)

Budko P.A.
(Ph.D., Professor, Department of Technical communication and automation in S.M. Budjonny Military Academy of the Signal Corps)

Budnikov S.A.
(Ph.D., associate professor, Actual Member of the Academy of Education Informatization, Head of the automated control systems Department in Russian Air Force Military Educational and Scientific Center “Air Force Academy named after Professor N.E. Zhukovsky and Y.A. Gagarin”)

Verhova G.V.
(Ph.D., Professor, Head of Department of Automation communication companies In the Bonch-Bruevich Saint Petersburg State University of Telecommunications)

Goncharevsky V.S.
(Ph.D., Professor, Honored Worker of Science and Technology of the Russian Federation, Professor of technologies and technical support and maintenance of the automated control systems in Military Space Academy of A.F. Mozhaysky)

Komashinskiy V.I.
(Ph.D., Professor, professor of processing and transmission discrete messages in the Bonch-Bruevich Saint Petersburg State University of Telecommunications)

Kirpanev A.V.
(Ph.D., Associate Professor, Head of JSC "Scientific Production Enterprise "Radar MMS")

Kurnosov V.I.
(Ph.D., Professor, Academician of Academy of Sciences of the Arctic, Academician of the International Academy of Informatization, International Academy of defense, security, law and order, corresponding member of the Academy of Natural Sciences, Senior Researcher" Open Joint Stock Company "Scientific Research Institute "Rubin")

Manuilov Y.S.
(Ph.D., Professor, Department of automated control systems space complexes in Military Space Academy of A.F. Mozhaysky)

Morozov A.V.
(Ph.D., Professor, Actual Member of the Academy of Military Sciences, Head of the Department of automated command and control systems in Military Аcademy of troops of antiaircraft defense)

Moshak N.N.
(Ph.D., Associate Professor, head of the department of "INTELTEH")

Prorok V.Y.
(Ph.D., Professor, professor of automatic control systems in Military Space Academy of A.F. Mozhaysky)

Semenov S.S.
(Ph.D., associate professor, professor of technical communication and automation in S.M. Budjonny Military Academy of the Signal Corps)

Sinicyn E.A.
(Ph.D., Professor, Head of the Research Department of JSC "The All-Russian research institute of radio equipment")

Shatrakov Y.G.
(Ph.D., Professor, Honored Worker of Science, Scientific Secretary of JSC "The All-Russian research institute of radio equipment")